2.( 1) 2x to the fourth power (2)X to the third power, y to the sixth power (3)2 to the second power * 10 to the sixth power (4)9 to the sixth power * a.
3.2A squared -XY squared 4 * 1/4 1 -0.5 2
4. 16 8
5.-The ninth power of A, the fourth power of B, the sixth power of 4x and the sixth power of 8 (a-b), and the fourth power of 2x.
6. It is approximately equal to the eighth power of 4.52* 10.
The teacher has changed, don't worry.